Abstract: A sanitary tissue dispensing system has a tissue dispensing box and a plastic bag dispenser. Soiled tissues are individually contained in single plastic bags that are folded to contain consumed tissue. Upon being placed and contained within the single plastic bags, the consumed tissue can be disposed of in a trash can without contact between consumed tissues with other persons. Spread of infection by bacteria, virus or fungi otherwise caused by contact with soiled tissue is substantially prevented. A folded plastic bag containing soiled tissue is, alternatively, inserted into a second bag, which is also folded prior to disposal.

Abstract: A pressure-wave cycled, repetitively pulsed gas laser comprises a laser cavity having open first and second ends, a channel connecting the first and second sides of laser cavity and a lasing initiation mechanism including two electric discharge electrodes. The electrode discharge generates a shockwave and associated pressure ridge. The channel may be a conicoidical channel of which the first and second open sides of the laser cavity form, respectively, large and small entrances for the shock wave and pressure ridge whereby when the wavefronts meet in the channel the energy thereof cancels in proportion to the entry areas and the resultant wave proceeds to the small entrance where it is accelerated by the nozzle action of the small entrance, entrains non-disassociated gases and circulates the gases through the laser cavity.